Probably it's just to provide a clean-feeling workspace. It's nice to start a day and the coffee machine is clean and the trash bins are empty - especially the latter is important, given that food waste etc. can quickly develop a nasty smell.
I agree but couldn't the employees themselves take care of such stuff?
We share such minor duties in the office (and food waste goes to the bio waste bin if suitable or gets packed in small bags). Maybe we're simply not spoiled enough! ;)
